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Find how much time does it take an electron traveling at the drift velocity to transverse the 2 centimeter long tungsten filament that has a radius of 0.1 millimeter? Suppose that the density of electrons in tungsten is 8.0 x 10^28 m^-3?
Gamma rays (γ rays) are high-energy photons. In acertain nuclear reaction, a γ ray of energy .511 MeV (millionelectrovolts) is produced
A isolated conducting sphere R=3.0 cm has a charge placed on itssurface. The surface charge density is uniform and has the value-7.2x10^(-6) C/m^2.(1) Find the total charge on the sphere, (2) themagnitude and direction of the electric field at r=R.(3..
A ball rolling down an incline travels 6.0m in the first 0.25 seconds, and 24m in the first 0.50 seconds. What is the average speed for the first time interval
a toy cannon uses a spring to project a 5.39-g soft rubber ball. the spring is originally compressed by 4.93 cm and has
It runs out of fuel at the end of the 4.97 s but does not stop. Explain how high does it rise above the ground?
An unknown substance has a mass of 0.125 kg and an initial temperature of97.5°C. The substance is then dropped into a calorimeter made of aluminum containing 0.285 kg of water initially at25.1°C. calculate the specific heat of the unknown substance
q1. throughout liftoff a hot air balloon accelerates upward at a rate of 2.7 ms2. the balloonist drops an object over
If a 100g of water is contained in a 300galuminum container at 20degrees C and an additional 200g of waterat 100degrees C is added to the container, determine the final temperature of the system
A wheel starts at rest and takes 3.00 s to rotate 37.0 revolutions at which point its angular velocity is 98.0 rad/s. What is the constant angular acceleration of the wheel
A material has an index of refraction of 2.050. What is the critical angle for internal reflection inside a block
Two capacitors of capacitance 5.0 μF and 8.0 μF areconnected in series. The 3rd capacitor of 10 μF isconnected in parallel with the 1st capacitor 5.0 μFcapacitor. The network is connected to a battery of 9.0V.
A spherical capacitor consists of two concentric spherical metal shells and has a radius a for the outer sphere and b for the inner sphere. Calculate the capacitance.
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